How to calculate needed lumens in a room?
What would the formula be to figure out how many total lumens you might want in a room? I realize there won't be one answer to a given sized room - that it will depend on
how bright one likes a room to be (bright but on a dimmer),
how good your eyesight (we're getting older),
how light the surfaces are (light oak floor, white painted cabinets, white tile backsplash, stainless appliances, white ceiling, light tan paint in just a few places, and dark shiny granite).
The kitchen is 10' x 12.5' with an 8' ceiling. I will have undercabinet lighting plus cans and I am just trying to figure out how many lumens those cans should have all together.